From 9d40f89b580ba15e58686ecb6c99f87322a55c46 Mon Sep 17 00:00:00 2001
From: Abdelrazak Younes <younes@lyx.org>
Date: Wed, 20 Feb 2008 21:46:49 +0000
Subject: [PATCH] Introducing LFUN_SPLIT_VIEW

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@23084 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/LyXAction.cpp                 |  2 ++
 src/LyXFunc.cpp                   |  1 +
 src/frontends/qt4/GuiView.cpp     | 23 +++++++++++++++++------
 src/frontends/qt4/GuiView.h       |  3 ++-
 src/frontends/qt4/GuiWorkArea.cpp |  1 +
 src/lfuns.h                       |  1 +
 6 files changed, 24 insertions(+), 7 deletions(-)

diff --git a/src/LyXAction.cpp b/src/LyXAction.cpp
index e00f3be2f5..440471a8d4 100644
--- a/src/LyXAction.cpp
+++ b/src/LyXAction.cpp
@@ -1140,6 +1140,8 @@ void LyXAction::init()
 		{ LFUN_WINDOW_NEW, "window-new", NoBuffer, Buffer },
 		{ LFUN_WINDOW_CLOSE, "window-close", NoBuffer, Buffer },
 
+		{ LFUN_SPLIT_VIEW, "split-view", ReadOnly, Buffer },
+
 		{ LFUN_DIALOG_SHOW, "dialog-show", NoBuffer, Edit },
 		{ LFUN_DIALOG_SHOW_NEW_INSET, "dialog-show-new-inset", Noop, Edit },
 		{ LFUN_DIALOG_UPDATE, "dialog-update", NoBuffer, Edit },
diff --git a/src/LyXFunc.cpp b/src/LyXFunc.cpp
index 626d2079c1..9c37060493 100644
--- a/src/LyXFunc.cpp
+++ b/src/LyXFunc.cpp
@@ -452,6 +452,7 @@ FuncStatus LyXFunc::getStatus(FuncRequest const & cmd) const
 	case LFUN_INSET_APPLY:
 	case LFUN_BUFFER_WRITE:
 	case LFUN_BUFFER_WRITE_AS:
+	case LFUN_SPLIT_VIEW:
 		if (lyx_view_)
 			return lyx_view_->getStatus(cmd);
 		enable = false;
diff --git a/src/frontends/qt4/GuiView.cpp b/src/frontends/qt4/GuiView.cpp
index ec44d867dc..a7e02019ed 100644
--- a/src/frontends/qt4/GuiView.cpp
+++ b/src/frontends/qt4/GuiView.cpp
@@ -706,23 +706,21 @@ GuiWorkArea * GuiView::workArea(Buffer & buffer)
 
 GuiWorkArea * GuiView::addWorkArea(Buffer & buffer)
 {
-
 	// Automatically create a TabWorkArea if there are none yet.
-	if (!d.splitter_->count())
-		addTabWorkArea();
-
-	TabWorkArea * tab_widget = d.currentTabWorkArea();
+	TabWorkArea * tab_widget = d.splitter_->count() 
+		? d.currentTabWorkArea() : addTabWorkArea();
 	return tab_widget->addWorkArea(buffer, *this);
 }
 
 
-void GuiView::addTabWorkArea()
+TabWorkArea * GuiView::addTabWorkArea()
 {
 	TabWorkArea * twa = new TabWorkArea;
 	QObject::connect(twa, SIGNAL(currentWorkAreaChanged(GuiWorkArea *)),
 		this, SLOT(on_currentWorkAreaChanged(GuiWorkArea *)));
 	d.splitter_->addWidget(twa);
 	d.stack_widget_->setCurrentWidget(d.splitter_);
+	return twa;
 }
 
 
@@ -967,6 +965,10 @@ FuncStatus GuiView::getStatus(FuncRequest const & cmd)
 		enable = buf;
 		break;
 
+	case LFUN_SPLIT_VIEW:
+		enable = buf;
+		break;
+
 	case LFUN_TOOLBAR_TOGGLE:
 		flag.setOnOff(d.toolbars_->visible(cmd.getArg(0)));
 		break;
@@ -1814,6 +1816,15 @@ bool GuiView::dispatch(FuncRequest const & cmd)
 			setFocus();
 			break;
 
+		case LFUN_SPLIT_VIEW:
+			if (Buffer * buf = buffer()) {
+				TabWorkArea * twa = addTabWorkArea();
+				GuiWorkArea * wa = twa->addWorkArea(*buf, *this);
+				setCurrentWorkArea(wa);
+				connectBufferView(wa->bufferView());
+			}
+			break;
+
 		default:
 			return false;
 	}
diff --git a/src/frontends/qt4/GuiView.h b/src/frontends/qt4/GuiView.h
index c2a75b49a2..d0c4298596 100644
--- a/src/frontends/qt4/GuiView.h
+++ b/src/frontends/qt4/GuiView.h
@@ -39,6 +39,7 @@ class Dialog;
 class GuiLayoutBox;
 class GuiToolbar;
 class GuiWorkArea;
+class TabWorkArea;
 
 /**
  * GuiView - Qt4 implementation of LyXView
@@ -160,7 +161,7 @@ private Q_SLOTS:
 
 private:
 	///
-	void addTabWorkArea();
+	TabWorkArea * addTabWorkArea();
 
 	/// connect to signals in the given BufferView
 	void connectBufferView(BufferView & bv);
diff --git a/src/frontends/qt4/GuiWorkArea.cpp b/src/frontends/qt4/GuiWorkArea.cpp
index 6f930f61a4..6e48e42390 100644
--- a/src/frontends/qt4/GuiWorkArea.cpp
+++ b/src/frontends/qt4/GuiWorkArea.cpp
@@ -572,6 +572,7 @@ void GuiWorkArea::contextMenuEvent(QContextMenuEvent * e)
 
 void GuiWorkArea::focusInEvent(QFocusEvent * /*event*/)
 {
+	lyx_view_->setCurrentWorkArea(this);
 	// Repaint the whole screen.
 	// Note: this is different from redraw() as only the backing pixmap
 	// will be redrawn, which is cheap.
diff --git a/src/lfuns.h b/src/lfuns.h
index ccb4a8ea53..c3f31b0a91 100644
--- a/src/lfuns.h
+++ b/src/lfuns.h
@@ -413,6 +413,7 @@ enum kb_action {
 	LFUN_IN_MATHMACROTEMPLATE,
 	LFUN_SCROLL,
 	LFUN_UI_TOGGLE,
+	LFUN_SPLIT_VIEW,
 	LFUN_LASTACTION                  // end of the table
 };